2. In the case that the plot has many trees (i.e. dense stands), a sub-plot may be defined to be used for these surveys. The size of the sub-plot at the time of the installation of the plot should be large enough to give reliable estimates
for these surveys for a minimum of 20 years, preferably throughout the life of the stand. A minimum of at least 20 trees in the sub-plot should be available in this period.
1. At each sample point, sample trees should be selected according to a stringently defined, objective and unbiased procedure (e.g., four point cross cluster orientated along the main compass directions with corner points at 25 m distance
from the grid point using a six-tree sampling process on each subplot or sample trees chosen following a spiral from the plot centre).
Online Language Learning Tool SkELL allows users to search for phrases in sentences, collocates and similar words. These examples have been automatically selected and may contain errors.
